German Offices in China, Germany 1900, 20pf ultramarine. Single tied by "Peking, Deutsches Post, 7/5, 01" cds on cover to Erlau, Germany, indistinct "S.B., Osta Exped" cachet handstamp at upper left, receiving backstamp; light cover wrinkling, F.-V.F., a rare forerunner usage of the Germany 1900 20pf Crown and Eagle issue used from Peking, China during the Boxer Rebellion; with 2008 A.P.S. certificate. Michel No. PVad; €2,500 ($3,425)  Estimate $500 - 750. $0 (Image)